CN111520855A - Fold and move ventilation system - Google Patents
Fold and move ventilation system Download PDFInfo
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- CN111520855A CN111520855A CN202010490653.8A CN202010490653A CN111520855A CN 111520855 A CN111520855 A CN 111520855A CN 202010490653 A CN202010490653 A CN 202010490653A CN 111520855 A CN111520855 A CN 111520855A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000005057 refrigeration Methods 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000004907 flux Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000007667 floating Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 206010011409 Cross infection Diseases 0.000 abstract description 2
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 6
- 238000007664 blowing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013517 stratification Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000005399 mechanical ventilation Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 238000005859 coupling reaction Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention discloses a folding ventilation system, which comprises an air supply system, an air return system and a fresh air system; the fresh air system comprises a fresh air pipe and a primary filter; the air supply system comprises an air supply main pipe, a conventional combined air treatment unit, a high-temperature cold water/low-temperature hot water combined air treatment unit and a reversing device; the air return system comprises an air return pipe and an electric valve of the air return pipe. The system changes the thermal buoyancy lift force into good through utilizing the buoyancy flux among different grades of jet flows, can obviously improve the phenomena of cold air sinking and hot air floating, has more uniform temperature distribution of a target area, and obviously improves the ventilation efficiency and the thermal comfort of a human body. The system can adapt to a tie epidemic linkage mode, and introduces outdoor fresh air into upper layer air so as to improve effective fresh air quantity, reduce energy consumption of fresh air treatment and enhance indoor air quality; during epidemic prevention and control, the upper layer wind can be switched to a full fresh wind mode to reduce the cross infection risk of personnel in the building.
Description
Technical Field
The invention relates to a ventilation system of construction machinery, in particular to a folding ventilation system.
Background
Along with the development of economic society of China, social substances are greatly enriched, the living quality of people is gradually improved, the comfortableness and the health of indoor environment are emphasized, and meanwhile, the problems of energy shortage, ecological environment pollution and the like are increasingly shown due to the continuous promotion of the industrialization process. Therefore, how to create a healthy and comfortable indoor environment in the indoor and outdoor environments with high-concentration pollutants so as to effectively reduce the health loss of residents caused by the high-concentration pollutants becomes an important problem related to the sustainable development of the residents and the society.
Currently, the air conditioning modes based on mechanical ventilation mainly include a hybrid ventilation mode, a displacement ventilation mode, a laminar ventilation mode, and a personalized ventilation mode. As a whole, although the conventional mechanical ventilation air conditioning method has the advantage of rapid response to cooling/heating, due to the influence of the thermal buoyancy lift force, the following disadvantages are present: (1) the temperature gradient is large, and the temperature distribution is uneven, so that the discomfort of a human body is caused; (2) the air supply range is shortened, the defect can be overcome by adopting a jet speed increasing mode, and the blowing sense near the air port is too strong; (3) the aim is to create a uniform indoor environment, the design temperature of a target area is realized by increasing input energy, and further energy consumption waste is generated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing a folding ventilation system.
The technical scheme for solving the technical problem is to provide a folding ventilation system, which is characterized by comprising an air supply system, an air return system and a fresh air system;
the fresh air system comprises a fresh air pipe and a primary filter; the air supply system comprises an air supply main pipe, a conventional combined air treatment unit, a high-temperature cold water/low-temperature hot water combined air treatment unit and a reversing device; the air return system comprises an air return pipe and an electric valve of the air return pipe;
one end of the fresh air pipe is a fresh air port, and the other end of the fresh air pipe is connected with an air inlet of the air supply main pipe; the fresh air pipe is provided with a primary filter;
the air outlet of the air supply main pipe is divided into an air supply first branch pipe and an air supply second branch pipe; a conventional combined air treatment unit is arranged on the first air supply branch pipe, and a high-temperature cold water/low-temperature hot water combined air treatment unit is arranged on the second air supply branch pipe; the first air supply branch pipe and the second air supply branch pipe are respectively connected with the low-temperature air interface air pipe and the high-temperature air interface air pipe through reversing devices; the tail end of the low-temperature air interface air pipe is a low-temperature air supply outlet, and the tail end of the high-temperature air interface air pipe is a high-temperature air supply outlet; according to the gas flow direction, the reversing device is positioned behind the conventional combined air treatment unit and the high-temperature cold water/low-temperature hot water combined air treatment unit and in front of the low-temperature air supply outlet and the high-temperature air supply outlet, and the reversing device is used for changing the trend of air supply flow, so that different combinations between the two air treatment units and the two air supply outlets are realized, and the requirements of refrigeration and heating working conditions are met respectively; the low-temperature air supply outlet and the high-temperature air supply outlet are communicated with the room and are arranged on the wall of the house, and the low-temperature air supply outlet is positioned above the high-temperature air supply outlet;
one end of the air return pipe is an air return port and is communicated with the room; the other end of the return air pipe is communicated with an air inlet of the air supply main pipe.
Compared with the prior art, the invention has the beneficial effects that:
(1) the system changes the thermal buoyancy lift force into good through utilizing the buoyancy flux among different grades of jet flows, can obviously improve the phenomena of cold air sinking and hot air floating, has more uniform temperature distribution of a target area, and obviously improves the ventilation efficiency and the thermal comfort of a human body.
(2) The system can adapt to a linkage mode of epidemic prevention, and introduces outdoor fresh air into an upper layer air-breathing layer to improve the effective fresh air quantity, reduce the energy consumption of fresh air treatment and enhance the indoor air quality; during epidemic prevention and control, the upper layer wind can be switched to a full fresh wind mode to reduce the cross infection risk of personnel in the building.
(3) The total energy amount is reduced, multi-quality heat energy coupling utilization can be realized simultaneously, the energy-saving potential is larger, and a new idea can be provided for further reducing the energy consumption of the building air conditioner.
(4) The system is flexible in regulation and control, and can flexibly regulate the air supply quantity and air supply parameters of the low-temperature air supply outlet and the high-temperature air supply outlet through the central console according to the information feedback of the temperature sensor and the speed sensor aiming at air-conditioning rooms with different functions.
(5) If the reversing device adopts a four-way reversing valve, the initial cost of the equipment casting mold can be saved, and the local resistance of the branch pipes can be well balanced by adopting a four-way air pipe, so that the air supply of each branch pipe is more uniform, and the four-way reversing valve has the characteristic of flexible arrangement.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the system of the present invention (wherein the reversing device is a four-way reversing valve);
FIG. 2 is a schematic diagram of the overall structure of the system of the present invention (wherein the reversing device employs a four-way air pipe);
FIG. 3 is a schematic view showing the installation positions of a low temperature air feeding port and a high temperature air feeding port of the present invention;
FIG. 4 is a schematic view of the internal structure of the four-way reversing valve of the present invention in a summer refrigeration mode;
FIG. 5 is a schematic view of the internal structure of the four-way reversing valve of the present invention in a winter heating mode;
FIG. 6 is a schematic view of the internal structure of the four-way duct of the present invention;
FIG. 7 is a schematic view of the internal structure of the first port line of the four-way vent pipe of the present invention;
FIG. 8 is a schematic view of the internal structure of the second port line of the four-way vent pipe of the present invention;
FIG. 9 is a schematic view of the airflow configuration during summer cooling in accordance with one embodiment of the present invention;
FIG. 10 is a schematic view of the airflow configuration during a winter heating mode according to an embodiment of the present invention;
in the figure, 1, a fresh air port; 2. a primary filter; 3. a static pressure box; 4. a main air supply pipe; 5. a return air duct; 6. a data line; 7. a center console; 8. a temperature sensor; 9. a speed sensor; 10. a conventional combined air handling unit; 11. an air return opening; 12. a high-temperature cold water/low-temperature hot water combined air treatment unit; 13. a reversing device; 14. a low-temperature air supply outlet; 15. a high-temperature air supply outlet; 16. a first branch air supply pipe; 17. a second branch air supply pipe; 18. a low-temperature air interface air pipe; 19. a high-temperature air interface air pipe; 20. an electric valve of the return air pipe; 21. a fresh air duct; 22. a four-way reversing valve first interface; 23. a four-way reversing valve second interface; 24. a fourth port of the four-way reversing valve; 25. a fourth port of the four-way reversing valve; 26. a four-way reversing valve body; 27. a four-way reversing valve core; 28. a first interface pipeline of the four-way air pipe; 29. a fourth joint pipeline of the four-way air pipe; 30. a four-way air pipe low-temperature air connector; 31. a four-way air pipe high-temperature air interface; 32. a four-way air pipe first electric valve; 33. and a four-way air pipe second electric valve.
Detailed Description
Specific examples of the present invention are given below. The specific examples are only intended to illustrate the invention in further detail and do not limit the scope of protection of the claims of the present application.
The invention provides a folding ventilation system (a system for short, see figures 1-8), which is characterized in that the system comprises an air supply system, an air return system and a fresh air system;
the fresh air system comprises a fresh air pipe 21 and a primary filter 2; one end of the fresh air pipe 21 is a fresh air port 1 for the entry of fresh air, and the other end is connected with an air inlet of the air supply main pipe 4; the fresh air pipe 21 is provided with a primary filter 2;
the fresh air system also comprises a static pressure box 3; static pressure case 3 sets up on fresh air pipe 21, and according to new trend flow direction primary filter 2 more is close to fresh air mouth 1, and static pressure case 3 is located primary filter 2 rear, and the new trend loops through primary filter 2 and static pressure case 3 and gets into in the air supply is responsible for 4.
The air supply system comprises an air supply main pipe 4, a conventional combined air treatment unit 10, a high-temperature cold water/low-temperature hot water combined air treatment unit 12 and a reversing device 13; the air outlet of the air supply main pipe 4 is divided into an air supply first branch pipe 16 and an air supply second branch pipe 17; a conventional combined air treatment unit 10 is arranged on the first air supply branch pipe 16, and a high-temperature cold water/low-temperature hot water combined air treatment unit 12 is arranged on the second air supply branch pipe 17; the first branch air supply pipe 16 and the second branch air supply pipe 17 are respectively connected with the low-temperature air interface air pipe 18 and the high-temperature air interface air pipe 19 through the reversing device 13; the tail end of the low-temperature air interface air pipe 18 is a low-temperature air supply outlet 14, and the tail end of the high-temperature air interface air pipe 19 is a high-temperature air supply outlet 15; according to the gas flow direction, the reversing device 13 is positioned behind the conventional combined air treatment unit 10 and the high-temperature cold water/low-temperature hot water combined air treatment unit 12 and in front of the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15; the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15 are communicated with the room and are arranged on the vertical wall of the house; the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15 are arranged in rows, and the low-temperature air supply outlet 14 is positioned above the high-temperature air supply outlet 15, namely is higher than the ground;
the air return system comprises an air return pipe 5; one end of the air return pipe 5 is an air return port 11 which is communicated with the room and is positioned at the roof; the other end of the return air pipe 5 is communicated with the air inlet of the main air supply pipe 4.
And the air return pipe 5 is provided with an air return pipe electric valve 20.
The system also comprises a centre console 7; a temperature sensor 8 and a speed sensor 9 are arranged at the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15; a temperature sensor 8 and a speed sensor 9 are arranged at the air return opening 11; the central controller 7 is electrically connected with a temperature sensor 8, a speed sensor 9, a conventional combined air treatment unit 10 and a high-temperature cold water/low-temperature hot water combined air treatment unit 12 through data lines 6.
The reversing device 13 is used for changing the direction of the air supply flow, so that different combinations between the two air handling units and the two air supply outlets are realized, and the requirements of the refrigeration and heating working conditions are met respectively, namely under the refrigeration working condition, the air supply first branch pipe 16 is connected with the low-temperature air interface air pipe 18 through the reversing device 13, and conventional cold air is supplied to the indoor space through the low-temperature air supply outlet 14; the second air supply branch pipe 17 is connected with a high-temperature air interface air pipe 19 through a reversing device 13 and supplies high-temperature cold air to the indoor through a high-temperature air supply outlet 15; under the heating working condition, the air supply first branch pipe 16 is connected with a high-temperature air interface air pipe 19 through a reversing device 13, and conventional hot air is supplied to the indoor through a high-temperature air supply outlet 15; the second branch air supply pipe 17 is connected with a low-temperature air interface air pipe 18 through a reversing device 13, and low-temperature hot air is sent out to the indoor through a low-temperature air supply outlet 14.
The reversing device 13 can adopt a four-way reversing valve or a four-way air pipe;
the four-way reversing valve comprises a four-way reversing valve body 26 and a rotatable four-way reversing valve core 27 arranged in the four-way reversing valve body 26;
the four-way reversing valve body 26 is provided with a four-way reversing valve first interface 22, a four-way reversing valve second interface 23, a four-way reversing valve third interface 24 and a four-way reversing valve fourth interface 25; a first connector 22 of the four-way reversing valve is connected with a first air supply branch pipe 16, a third connector 24 of the four-way reversing valve is connected with a second air supply branch pipe 17, and a fourth connector 25 of the four-way reversing valve is connected with a low-temperature air connector air pipe 18; the second connector 23 of the four-way reversing valve is connected with the high-temperature air connector air pipe 19.
The four-way air pipe comprises a four-way air pipe first interface pipeline 28, a four-way air pipe second interface pipeline 29, a four-way air pipe low-temperature air interface 30, a four-way air pipe high-temperature air interface 31, a four-way air pipe first electric valve 32 and a four-way air pipe second electric valve 33;
one end of the four-way air pipe first interface pipeline 28 is connected with the air supply first branch pipe 16, and the other end is divided into two branches; the starting end of each branch is provided with a four-way air pipe first electric valve 32, and the corresponding branch is switched on and off under the action of the four-way air pipe first electric valve 32, so that the conversion of the tail end of air supply under different working conditions is realized (namely, the air supply is sent out from a four-way air pipe low-temperature air interface 30 or sent out from a four-way air pipe high-temperature air interface 31); the tail ends of the two branches are respectively converged at a low-temperature air interface 30 of the four-way air pipe and a high-temperature air interface 31 of the four-way air pipe;
one end of the four-way air pipe second connector pipeline 29 is connected with the air supply second branch pipe 17, and the other end is divided into two branches; the starting end of each branch is provided with a four-way air pipe second electric valve 33, and the corresponding branch is switched on and off under the action of the four-way air pipe second electric valve 33, so that the conversion of the tail end of the air supply under different working conditions is realized (namely the air supply is sent out from a four-way air pipe low-temperature air interface 30 or sent out from a four-way air pipe high-temperature air interface 31); the tail ends of the two branches are respectively converged at a low-temperature air interface 30 of the four-way air pipe and a high-temperature air interface 31 of the four-way air pipe;
the four-way air pipe low-temperature air interface 30 is connected with the low-temperature air interface air pipe 18; the four-way air pipe high-temperature air interface 31 is connected with the high-temperature air interface air pipe 19.
In the embodiment, the model of the primary filter 2 is GFWZ-18-595, which is used for filtering fresh air impurities;
the static pressure box 3 is used for improving the static pressure of fresh air and reducing noise;
in this embodiment, the console 7 may adopt a PLC programmable controller with model number of amasamotion-CPU 217 XP-R;
in the embodiment, the temperature sensor 8 is in a model of SIN-WZP-PT100 and is used for measuring the air supply temperature and the air return temperature; the model of the speed sensor 9 is WD4122, and the speed sensor is used for measuring the air supply speed and the air return speed;
in this embodiment, the conventional combined air handling unit 10 utilizes high-grade energy for refrigeration and heating, and the type selection is related to cooling and heating load, air volume and the like, and SMS-20F can be adopted;
in this embodiment, the high-temperature cold water/low-temperature hot water combined air processing unit 12 needs less energy, uses low-grade energy for refrigeration and heating, realizes energy cascade utilization, and can use SMS-10F as its selection is related to cooling and heating load, air volume, etc.;
the working principle and the working process of the invention are as follows:
when in operation, fresh air enters the fresh air pipe 21 from the fresh air inlet 1 and is mixed with return air of the return air pipe 5 through the primary filter 2 and the static pressure box 3 in sequence; mixed air respectively enters the conventional combined air treatment unit 10 and the high-temperature cold water/low-temperature hot water combined air treatment unit 12 after passing through the air supply main pipe 4; after the reversing device 13 is processed according to different working conditions, air in the conventional combined air processing unit 10 and the high-temperature cold water/low-temperature hot water combined air processing unit 12 is sent out through the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15, so that a person is in a thermal environment with proper conditions such as air temperature, air speed and the like and comfortable feeling of the person, and return air returns to the air supply main pipe 4 through the return air pipe 5 through the return air inlet 11.
In the operation process, the air supply speed and the air supply temperature in the control panel of the conventional combined air treatment unit 10 and the high-temperature cold water/low-temperature hot water combined air treatment unit 12 can be manually set according to the physical feeling conditions of the personnel, so that the parameters such as the fan frequency, the unit power, the water flow of the heat exchanger and the like are changed, the temperature distribution of the activity area of the personnel is uniform, no obvious temperature stratification phenomenon exists, and a comfortable air conditioning environment is provided for the personnel.
Or, in the operation process, the temperature can be adjusted through the center console 7, the temperature sensor 8 and the speed sensor 9; the temperature sensor 8 and the speed sensor 9 respectively collect the air temperature and the air speed data of the air return opening 11, the low-temperature air supply opening 14 and the high-temperature air supply opening 15 in real time, then the data are transmitted to the central console 7, the central console 7 processes and analyzes the data, and then the fan frequency, the unit power, the water flow and other parameters of the heat exchanger of the conventional combined air treatment unit 10 and the high-temperature cold water/low-temperature hot water combined air treatment unit 12 are controlled, so that automatic regulation and control are realized, the temperature distribution of a personnel activity area is uniform, no obvious temperature stratification phenomenon exists, and a comfortable air conditioning environment is provided for personnel.
Or, the center console 7 can also be connected with a remote PLC cloud box (model Suk-Bow-W) through a network to realize data transmission; in the operation process, the temperature sensor 8 and the speed sensor 9 respectively collect the air temperature and the air speed data of the air return inlet 11, the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15 in real time, the data are transmitted to the central console 7, the central console 7 outputs signals to the remote PLC cloud box, the operation condition of the remote PLC cloud box feedback system is given to an operator, the operator remotely observes the data and manually controls the central console 7 through the remote PLC cloud box, and further controls the fan frequency, the unit power, the water flow and other parameters of the conventional combined air treatment unit 10 and the high-temperature cold water/low-temperature hot water combined air treatment unit 12, so that the temperature distribution of a personnel activity area is uniform, no obvious temperature stratification phenomenon exists, and a comfortable air conditioning environment is provided for the personnel.
Under the refrigeration working condition: the reversing device 13 adopts a four-way air pipe (see fig. 6), and normal cold air treated by the normal combined air treatment unit 10 flows out of a low-temperature air interface 30 of the four-way air pipe through a first interface pipeline 28 of the four-way air pipe and reaches the low-temperature air supply outlet 14 through a low-temperature air interface air pipe 18 to supply normal cold air to the indoor space under the control of a first electric valve 32 of the four-way air pipe and a second electric valve 33 of the four-way air pipe; the high-temperature cold air treated by the high-temperature cold water/low-temperature hot water combined air treatment unit 12 flows out of the high-temperature air interface 31 of the four-way air pipe through the second interface pipeline 29 of the four-way air pipe, reaches the high-temperature air supply outlet 15 through the high-temperature air interface air pipe 19, and is supplied to the indoor space. The reversing device 13 adopts a four-way reversing valve (see fig. 4), and by controlling a valve core 27 of the four-way reversing valve, the conventional cold air treated by the conventional combined air treatment unit 10 flows out of a fourth interface 25 of the four-way reversing valve through a first interface 22 of the four-way reversing valve, and reaches the low-temperature air supply outlet 14 through a low-temperature air interface air pipe 18 to supply the conventional cold air to the indoor space; high-temperature cold air treated by the high-temperature cold water/low-temperature hot water combined air treatment unit 12 flows out of the fourth port 24 of the four-way reversing valve through the second port 23 of the four-way reversing valve, passes through the high-temperature air port air pipe 19, reaches the high-temperature air supply port 15 and is supplied to the indoor space. In this embodiment, the blowing temperature of the low temperature blowing port 14 is 20 ℃, and the blowing temperature of the high temperature blowing port 15 is 23 ℃. The air supply axis offset of the low-temperature air supply outlet 14 is larger than the air supply axis offset of the high-temperature air supply outlet 15. The air supply temperature difference between the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15 generates favorable buoyancy flux, the high-temperature cold air of the high-temperature air supply outlet 15 obviously and positively influences the cold air flow settling velocity of the conventional cold air of the low-temperature air supply outlet 14 due to the influence of buoyancy lift force, and the high-temperature cold air of the high-temperature air supply outlet 15 forms lifting force on the conventional cold air of the low-temperature air supply outlet 14, so that the high-grade cold energy conveyed by the low-temperature air supply outlet 14 is more efficiently.
Under the heat supply working condition: the reversing device 13 adopts a four-way air pipe (see fig. 6), and through the control of a four-way air pipe first electric valve 32 and a four-way air pipe second electric valve 33, the conventional hot air processed by the conventional combined air processing unit 10 flows out of a four-way air pipe high-temperature air interface 31 through a four-way air pipe first interface pipeline 28, and reaches a high-temperature air supply outlet 15 through a high-temperature air interface air pipe 19 to send the conventional hot air to the indoor space; the low-temperature hot air treated by the high-temperature cold water/low-temperature hot water combined air treatment unit 12 flows out of the low-temperature air interface 30 of the four-way air pipe through the second interface pipeline 29 of the four-way air pipe, and reaches the low-temperature air supply outlet 14 through the low-temperature air interface air pipe 18 to be supplied to the indoor space. The reversing device 13 adopts a four-way reversing valve (see fig. 5), and by controlling a valve core 27 of the four-way reversing valve, the conventional hot air treated by the conventional combined air treatment unit 10 flows out of a second connector 23 of the four-way reversing valve through a first connector 22 of the four-way reversing valve, and reaches a high-temperature air supply outlet 15 through a high-temperature air connector air pipe 19 to send the conventional hot air into a room; the low-temperature hot air treated by the high-temperature cold water/low-temperature hot water combined air treatment unit 12 flows out of a fourth connector 25 of the four-way reversing valve through a third connector 24 of the four-way reversing valve, reaches the low-temperature air supply outlet 14 through a low-temperature air connector air pipe 18 and is supplied to the indoor space. In the embodiment, the air supply temperature of the low-temperature air supply outlet 14 is 24 ℃; the high temperature air supply port 15 supplies air at a temperature of 27 ℃. The air supply axis offset of the low-temperature air supply outlet 14 is less than the air supply axis offset of the high-temperature air supply outlet 15. The air supply temperature difference between the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15 generates favorable buoyancy flux, and due to the influence of buoyancy lift force, the low-temperature hot air of the low-temperature air supply outlet 14 obviously inhibits the conventional hot air floating of the high-temperature air supply outlet 15, so that the heat is prevented from rising to a non-personnel area too fast, and the heat is effectively utilized in the personnel area.
The air supply temperature is related to the environmental load, the air supply amount, and the like. The buoyancy flux can be used for judging the size of the settlement and the axle center offset, and according to a calculation formula of the buoyancy flux;
in the formula: g is gravity acceleration (m/s)2) Rho is the blowing density (kg/m)3) M is mass flow (kg/s), v0Jet velocity (m/s), △ T being supply air temperature T and indoor temperature T0The difference (K). When the air supply speeds of the low-temperature air supply outlet 14 and the high-temperature air supply outlet 15 are the same, the jet flow sedimentation and floating amplitude are different due to different buoyancy flux effects of the jet flows of different grades. Therefore, the amount of deviation of the air supply axis of the low-temperature air supply port 14 in fig. 9 > the amount of deviation of the air supply axis of the high-temperature air supply port 15, and the amount of deviation of the air supply axis of the low-temperature air supply port 14 in fig. 10 < the amount of deviation of the air supply axis of the high-temperature air supply port 15.
For the activities of sitting and working, lying and resting, and the like, the low-temperature air supply outlet 14 is positioned on the upper row and is arranged at the position 1.2 meters away from the ground; the high-temperature air supply outlet 15 is positioned at the lower row and is arranged at the position which is 0.7 meter away from the ground. The height varies with the height of the personnel activity area. The number and the distance between the low temperature air supply outlet 14 and the high temperature air supply outlet 15 can be determined according to the literature 'Lu Guang Qing, practical heat supply air conditioner design manual [ M ].2 edition, Beijing, China building industry Press, 2008'.
Nothing in this specification is said to apply to the prior art.
Claims (10)
1. A folding ventilation system is characterized in that the system comprises an air supply system, an air return system and a fresh air system;
the fresh air system comprises a fresh air pipe and a primary filter; the air supply system comprises an air supply main pipe, a conventional combined air treatment unit, a high-temperature cold water/low-temperature hot water combined air treatment unit and a reversing device; the air return system comprises an air return pipe;
one end of the fresh air pipe is a fresh air port, and the other end of the fresh air pipe is connected with an air inlet of the air supply main pipe; the fresh air pipe is provided with a primary filter;
the air outlet of the air supply main pipe is divided into an air supply first branch pipe and an air supply second branch pipe; a conventional combined air treatment unit is arranged on the first air supply branch pipe, and a high-temperature cold water/low-temperature hot water combined air treatment unit is arranged on the second air supply branch pipe; the first air supply branch pipe and the second air supply branch pipe are respectively connected with the low-temperature air interface air pipe and the high-temperature air interface air pipe through reversing devices; the tail end of the low-temperature air interface air pipe is a low-temperature air supply outlet, and the tail end of the high-temperature air interface air pipe is a high-temperature air supply outlet; according to the gas flow direction, the reversing device is positioned behind the conventional combined air treatment unit and the high-temperature cold water/low-temperature hot water combined air treatment unit and in front of the low-temperature air supply outlet and the high-temperature air supply outlet, and the reversing device is used for changing the trend of air supply flow, so that different combinations between the two air treatment units and the two air supply outlets are realized, and the requirements of refrigeration and heating working conditions are met respectively; the low-temperature air supply outlet and the high-temperature air supply outlet are communicated with the room and are arranged on the wall of the house, and the low-temperature air supply outlet is positioned above the high-temperature air supply outlet;
one end of the air return pipe is an air return port and is communicated with the room; the other end of the return air pipe is communicated with an air inlet of the air supply main pipe.
2. The folding ventilation system according to claim 1, wherein under the refrigeration condition, the first air supply branch is connected with the low-temperature air interface air pipe through the reversing device, and the conventional cold air is supplied to the indoor through the low-temperature air supply opening; the second air supply branch pipe is connected with the high-temperature air interface air pipe through a reversing device and supplies high-temperature cold air to the indoor through a high-temperature air supply outlet; under the heating working condition, the air supply first branch pipe is connected with the high-temperature air interface air pipe through the reversing device, and conventional hot air is supplied to the indoor through the high-temperature air supply outlet; the second branch air supply pipe is connected with the low-temperature air interface air pipe through the reversing device and supplies low-temperature hot air to the indoor through the low-temperature air supply outlet.
3. The cascade ventilation system according to claim 1 or 2, wherein the reversing device is a four-way reversing valve or a four-way air pipe.
4. The cascading ventilation system of claim 3, wherein the four-way reversing valve includes a four-way reversing valve body and a rotatable four-way reversing valve spool disposed within the four-way reversing valve body;
the four-way reversing valve body is provided with a four-way reversing valve first interface, a four-way reversing valve second interface, a four-way reversing valve third interface and a four-way reversing valve fourth interface; a first connector of the four-way reversing valve is connected with a first air supply branch pipe, a third connector of the four-way reversing valve is connected with a second air supply branch pipe, and a fourth connector of the four-way reversing valve is connected with a low-temperature air connector air pipe; and a second connector of the four-way reversing valve is connected with a high-temperature air connector air pipe.
5. The cascading ventilation system of claim 3, wherein the four-way vent includes a four-way vent first interface line, a four-way vent second interface line, a four-way vent low temperature air interface, a four-way vent high temperature air interface, a four-way vent first electrically operated valve, and a four-way vent second electrically operated valve;
one end of the four-way air pipe first interface pipeline is connected with the air supply first branch pipe, and the other end of the four-way air pipe first interface pipeline is divided into two branches; the starting end of each branch is provided with a four-way air pipe first electric valve, and the corresponding branch is switched on and off under the action of the four-way air pipe first electric valve, so that the conversion of the air supply tail end under different working conditions is realized; the tail ends of the two branches are respectively converged at a low-temperature air interface of the four-way air pipe and a high-temperature air interface of the four-way air pipe;
one end of the four-way air pipe second interface pipeline is connected with the air supply second branch pipe, and the other end of the four-way air pipe second interface pipeline is divided into two branches; the starting end of each branch is provided with a four-way air pipe second electric valve, and the corresponding branch is switched on and off under the action of the four-way air pipe second electric valve, so that the conversion of the air supply tail end under different working conditions is realized; the tail ends of the two branches are respectively converged at a low-temperature air interface of the four-way air pipe and a high-temperature air interface of the four-way air pipe;
the low-temperature air interface of the four-way air pipe is connected with the low-temperature air interface air pipe; the high-temperature air interface of the four-way air pipe is connected with the high-temperature air interface air pipe.
6. The cascade ventilation system of claim 1, wherein the fresh air system further comprises a plenum box; the static pressure box is arranged on the fresh air pipe and is positioned behind the primary filter according to the flow direction of fresh air.
7. The cascade ventilation system of claim 1, wherein the system further comprises a center console; a temperature sensor and a speed sensor are arranged at the low-temperature air supply outlet and the high-temperature air supply outlet; a temperature sensor and a speed sensor are arranged at the air return inlet; the central controller is respectively and electrically connected with the temperature sensor, the speed sensor, the conventional combined air treatment unit and the high-temperature cold water/low-temperature hot water combined air treatment unit.
8. The cascading ventilation system of claim 1, wherein the return air line is provided with a return air line electrically actuated valve.
9. The cascade ventilation system of claim 1, wherein the air return is located at a roof.
10. The cascading ventilation system of claim 1, wherein the low temperature supply air outlet is 1.2 meters above ground; the height of the high-temperature air supply outlet from the ground is 0.7 m.
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| CN202010490653.8A CN111520855A (en) | 2020-06-02 | 2020-06-02 | Fold and move ventilation system |
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| CN202010490653.8A CN111520855A (en) | 2020-06-02 | 2020-06-02 | Fold and move ventilation system |
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| CN112228958A (en) * | 2020-10-14 | 2021-01-15 | 河南中烟工业有限责任公司 | Central air-conditioning process system suitable for tall and large space |
| CN112648700A (en) * | 2020-12-16 | 2021-04-13 | 西安交通大学 | Building ventilation system capable of utilizing wind energy |
| CN116045445A (en) * | 2023-04-03 | 2023-05-02 | 河北空调工程安装有限公司 | Multi-dimensional monitoring and regulating device and method for indoor air quality |
| EP4180734A1 (en) * | 2021-11-13 | 2023-05-17 | Beijing University of Technology | An indoor adaptive ventilation system and method based on multi-vent ventilation modules |
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| EP4180734A1 (en) * | 2021-11-13 | 2023-05-17 | Beijing University of Technology | An indoor adaptive ventilation system and method based on multi-vent ventilation modules |
| CN116045445A (en) * | 2023-04-03 | 2023-05-02 | 河北空调工程安装有限公司 | Multi-dimensional monitoring and regulating device and method for indoor air quality |
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